1. Department of Hematology, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
2. Department of Hematology, Imamura General Hospital, Kagoshima, Japan
3. Department of Hematology and Rheumatology, Kagoshima University, Kagoshima, Japan
4. Department of Medical Oncology, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
5. Department of Quality, Japanese Red Cross Kyushu Block Blood Center, Fukuoka, Japan
6. Department of Medical Technology, The Japanese Red Cross Nagasaki Genbaku Hospital, Nagasaki, Japan